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No. 6|8,920. Patentd Feb. 7, I899.

H. C. THOMSON.

ELECTRIC HAND LIGHTINGGAS BURNER.

(Application filed May 81, 1898.) I (No Model.)

IIIIIIIIIII mn n-nm the coiled spring 0;, one of UNITED STATES PATENT OFFICE.

ELECTRIC GAS LIGHTING COMPANY,

OF SAME PLACE.

ELECTRIC HAND-LIGHTING GAS-BURNER.

SPECIFICATION forming part Of Letters Patent No. 618,920, dated February '7, 1899. Application filed May 31, 1898. Serial No. 682,126. (No model.)

To all whom it may concern.-

Be it known that I, HENRY C. THOMSON, of Boston, Massachusetts, have invented a new and useful Improvement in Electric Hand= Lighting Gas-Burners, of which the following is a specification.

My invention relates to that class of electric gas-lighting burners in which the gasvalve is opened and the vibrating electrode simultaneously operated.

My improvement consists in reconstructing and rearranging the parts of such a burner as is shown in Letters Patent No. 562,891, of June 30, 1896, to G. J. Galbraith, in such manner as to produce a new combination re sulting in not only a greater simplicity of construction, but also avoiding the projection of the flexible spring-electrode in such manner as to expose it to injury or make it inconvenient in dusting or cleansing such apparatus.

My invention will be clearly understood from the following drawings, in which similar letters and numerals refer to similar parts, and in which Figure 1 is a front elevation with the gas turned off. Fig. 2 is a side elevation with the gas turned off. Figs. 3, 4, and 5 are views showing the movable electrode and its controlling parts in different positions.

I will now describe the drawings.

A is the ordinary burner-pillar.

A is the fixed electrode, which may be supported in a collar 1 and which is composed of whose ends is fixed in said collar and whose other end a constitutes the flexible electrode-point, within which coiled spring is the pin a held in place by resting upon the ratchets c.

The movable electrode 6 forms the tip of the vibrating plate-arm B, its plate part being rigidly mounted upon the gas-valve E. This gas-valve is the ordinary conical rotating valve having a passage-way, Which upon its rotation is coincident with the gasway through the burner. The stem part of the thumb-piece D fits into a plate-piece (1 (below the main-burner support or bracket,) in which is cut a cam 02 which plays against the stop 2, so as to admit of a one-quarter rotation of the thumb-cock, and said stem, then extending through said bracket, also fits into a second plate-piece d, which is provided with teeth (1. Extending from the plate part of B are the teeth 22 which gear with -corre= sponding teeth d upon the plate cl, rigidly attached to the spindle of the handle D, so that the quarter rotation of the handle D, se= cured by means of a cam 61 in the plate-piece d and stop 2, will bring the tip 5 of the mov= able plate-arm B into and out of contact with the stationary flexible electrode a The whole stationary electrode A is ele= vated in order to make contact with b by means of a ratchet wheel C, loosely journaled 011 the extension of the gas-valve and moving always from left to right-that is, in the direction of the hands of a watch. As the ratchets 0 pass under the pin a the said pin causes an extension of the coiled spring a, and so permits of the making and breaking of the contact between a and b.

To secure the continuous rotation of the ratchet-wheel C, the clutch F is attached to the plate part of B, so that the ratchet-wheel is caused to revolve in turning the gas on; but in turning it off the end of the clutch slides over the ratchet-teeth c, the ratchet wheel being prevented from revolving in the contrary direction by the pin a serving as a detent.

Having described my improvement, I do not claim any of the elements themselves as novel; but

What I wish to and claim is 1. In an electric hand-lighting gasburner, in combination with the ordinary burner-pillar, a fixed electrode consisting of a coiled spring, properly attached to the burner-pillar and terminating in an electrode-point, and a pin within the said coiled spring; aratchetwheel loosely journaled upon the gas-cock stem and supporting said electrode-pin; a plate-piece rigidly fixed to the gas-cock stem, having its upper arm adapted as a movable electrode and having teeth upon its lower plate edge; a spring-clutch rigidly attached to said plate-arm to move said ratchet-wheel; a thumb piece or key carryinga plate having teeth adapted to gear with the teeth upon the protect by Letters Patent bottom of the plate=piece; substantially as described and shown.

2. An electric hand-lighting gas-burner composed of the gas-pillar A; a verticallymovable electrode consisting of a coiled spring a and pin a within the same; a rotating gascock E having a projecting spindle; a ratchetwheel 0 loosely journaled upon said spindle; a vibrating plate-arm 13 having the electrode 1) and the teeth 11 a clutch F fixed to said plate-piece 13; a handle D; a plate-piece (1 having the teeth d carried by said handle; and a plate d also carried by said handle and having a cam d to limit the movement of the handle-piece to a one-quarter movement; substantially as described and shown. In Witness whereof I hereunto sign my name this 30th day of April, A. D. 1898.

HENRY O. THOMSON.

Vitnesses: FRED. OHAMBERLIN,

JHAs. II. HANSON. 

